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Topic: Nematomorpha


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  Highbeam Encyclopedia - Search Results for Nematomorpha
Nematomorpha, small (about 230 species) phylum of pseudocoelomates ; the horsehair worms.
Most are very slender, elongated creatures found in ponds and streams, whose larvae live as parasites in arthropods.
Synopsis and identification of North American hairworms (Gordioidea: Nematomorpha).
www.encyclopedia.com /SearchResults.aspx?Q=Nematomorpha   (325 words)

  
 Nematomorpha - LoveToKnow 1911   (Site not responding. Last check: 2007-09-07)
The Nematomorpha are nearly solid, - quite so at each end, From Cambridge Natural History, vol.
The Nematomorpha form an isolated group; at first sight they seem to be connected with the Nematoda, but in reality their only common feature is the tubular genitalia opening into a cloaca, and it seems at present impossible to connect them with the Annelida.
Until more is known it seems wisest to look upon them as an isolated assemblage of animals with no near affinities to any of the great phyla.
www.1911encyclopedia.org /Nematomorpha   (843 words)

  
 Phylogenetic Systematization of the Nemathelminthes (Aschelminthes)   (Site not responding. Last check: 2007-09-07)
The Nemathelminthes (with the Gastrotricha, Nematoda, Nematomorpha, Kinorhyncha, Loricifera and Priapulida) constitute a monophylum (autapomorphies (3): stratified cuticle with epicuticle and basal layer; terminal anterior mouth opening; cylindrical, muscular sucking pharynx); the Rotifera and the Acanthocephala do not belong to this monophylum.
Within the Cycloneuralia, the Nematoidea (= Nematoda + Nematomorpha) and Scalidophora (= Kinorhyncha + Loricifera + Priapulida) are sister groups.
At present, the Nemathelminthes can best be hypothesized to be the sister group of the Spiralia (with the autapomorphy (2) "spiral cleavage") within the Gastroneuralia (with the autapomorphy (1) "ventral nervous system with longitudinal, ventrolateral cords and centralized, anteriorly located cerebral complex").
www.gwdg.de /~clembur/verh-dt.htm   (352 words)

  
 [No title]   (Site not responding. Last check: 2007-09-07)
Adult Nematomorpha are circular in section, about 1-2 mm in diameter and 10-100 cm long.
Known as horsehair worms (for their resemblance to a rather stout horsehair) or Gordian worms (for their habit of coiling into tangled masses of two or more individuals), they occur in small bodies of still freshwater and in moist soil at the edges of ponds.
In Nematomorpha, the somatic nervous system is reduced to a single ventral cord.
www.lucidcentral.com /keys/lwrrdc/public/Aquatics/aatop/html/TC__.htm   (267 words)

  
 [No title]
Nematomorpha (from the Greek nema, "thread," and morphe, "shape"); horsehair or gordian worms, e.g.
The first known fossil record of Nematomorpha dates from the Eocene (40 - 70 million years ago), but some suggest the group may have evolved in the Paleozoic Era (over 500 million years ago).
Nematomorpha larvae are parasites aquatic and terrestrial invertebrates, including notably grasshoppers, crickets, locusts, katydids, beetles, caddisflies, dragonflies, spiders, millipedes, centipedes, crustaceans, and leeches.
plpnemweb.ucdavis.edu /nemaplex/Kingdoms/metazoa.htm   (852 words)

  
 Two Dimensions of Biodiversity Research Exemplified by Nematomorpha and Gastrotricha -- Schmidt-Rhaesa 42 (3): 633 -- ...
The Nematomorpha is a monophyletic taxon of parasitic worms
Kirjanova, E. Permeability of the cuticle in freshwater hairworms (Nematomorpha, Gordioidea).
Horsehair worms (Nematomorpha) as parasites of praying mantids.
icb.oxfordjournals.org /cgi/content/full/42/3/633   (3249 words)

  
 Best of the Web - What's New in Science For 10/15/2005
Nematomorpha (Horsehair Worms) - Describes characteristics of species under this animal group.
Nematomorpha: Definition - Provides a definition on this animal group.
Nematomorpha: Gordian Worms and Horsehair Worms - Discusses the digestion, body form and habitation of these species.
botw.org /new/Science/10152005.cfm   (1306 words)

  
 NEMATOMORPHA
Locomotion is achieved by the same method as the Nematoda.
The main difference between Nematomorpha adults and Nematoda adults is the degenerate gut in the Nematomorpha.
The role of the adults is not feeding, but reproduction and dispersal, and they have a featureless body, as the name, hair worm, suggests.
www.bumblebee.org /invertebrates/NEMATOMORPHA.htm   (156 words)

  
 Lab 3 – Ecdysozoa (7 phyla)
Nematomorpha - The Nematomorpha are also known as the horse-hair worms.
All Nematomorpha are parasitic during part of their life cycle, but they are usually parasites of insects.
Classification: The Nematomorpha is divided into two classes: Class Gordioida and Class Nectonematoida.
online.sfsu.edu /~jrblair/biol170/lab/Laboratory-3.htm   (968 words)

  
 Nematomorpha   (Site not responding. Last check: 2007-09-07)
Schmidt-Rhaesa, A. Zur Morphologie, Biologie und Phylogenie der Nematomorpha.
Schmidt-Rhaesa, A. Phylogenetic relationships of the Nematomorpha — a discussion of current hypothesis.
Schmidt-Rhaesa, A. Horsehair worms (Nematomorpha) as parasites of praying mantids with a discussion of their life cycle.
tolweb.org /tree?group=Nematomorpha&contgroup=Bilateria   (392 words)

  
 Gordian Worms
Gordian worms belong to a small phylum, the Nematomorpha: a name that means 'form of a thread'.
Their habit of writhing and contorting themselves into knots, with one or more worms tangled together, accounts for their common name, 'Gordian' Worm.
General information on Gordian Worms with images including eggs, a diagram of the life cycle, and a video of how gordiid larvae penetrate into a transport host
www.amonline.net.au /factsheets/gordian_worms.htm   (822 words)

  
 Nematomorpha - ENCYCLOPEDIA - The History Channel UK
Nematomorpha - ENCYCLOPEDIA - The History Channel UK or LOGIN
Nematomorpha, small (about 230 species) phylum of pseudocoelomates
THE HISTORY CHANNEL and BIOGRAPHY are trademarks of AandE Television Networks used under license ©2004 AandE Television Networks.
www.thehistorychannel.co.uk /site/search/search.php?word=Nematomo   (268 words)

  
 NEMATOMORPHA - Online Information article about NEMATOMORPHA
Verrill, may also come here, but at See also:
The Nematomorpha form an isolated group; at first sight they seem to be connected with the See also:
Nematoda, but in reality their only See also:
encyclopedia.jrank.org /NAN_NEW/NEMATOMORPHA.html   (1081 words)

  
 Survey Document #2147
The phylum Nematomorpha (from the Greek nema, "thread," and morphe, "shape"), consists of a group of invertebrates, commonly called horsehair or gordian worms, that has no close relationships with any other living organisms.
The name horsehair is derived from the worm's hair or threadlike appearance in its adult stage.
Please report any problems with or suggestions about this page to:
www.inhs.uiuc.edu /chf/pub/surveyreports/mar-apr95/page4.html   (915 words)

  
 Links SQL: Biological Science/Plants Animals and The Environment/Zoology/Phylum Nematomorpha
Links SQL: Biological Science/Plants Animals and The Environment/Zoology/Phylum Nematomorpha
Home : Biological Science : Plants Animals and The Environment : Zoology : Phylum Nematomorpha
General information on nematomorphs, supported by the Illinois Natural History Survey, with many links to economic entomology, aquatic ecology, wildlife ecology and biodiversity.
www.mhhe.com /links/1253/1249/1178/781/index.html   (74 words)

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